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Module C (Quizlet) 1
Technical Escort - Chemical Operations
Question | Answer |
---|---|
Chemistry definition | The science of matter, energy and reactions |
Matter definition | Anything that has mass and occupies space |
Name the three states of matter | Solid, liquid and gas |
Boiling point definition | When a liquid transitions to a gas (temperature at which a substance's vapor pressure equals and then exceeds the atmospheric pressure) |
Freezing point definition | When a liquid transitions into a solid |
Sublimation definition | When a solid transitions into a gas |
Vapor pressure definition | Force exerted by the vapor molecules in a closed container at equilibrium |
Vapor density definition | The molecular weight of gas or vapor compared to air |
Ionization potential definition | Amount of energy required to excite a valence electron |
Specific gravity definition | The weight and volume of a solid or liquid compared to the weight of an equal volume of water |
What is level of pH is considered acidic? | Less than 2 |
What is level of pH is considered caustic? | Greater than 12.5 |
Solubility definition | A substance's ability to be dissolved in water |
Element definition | Simplest form of a substance that retains its properties |
Compounds definition | Two or more elements bonding together chemically |
Homogeneous definition | Relatively uniform in composition |
Heterogeneous definition | Mixture composition varies from position to position within the mixture |
Salts definition | The combination of a metal and non-metal element |
Ionic bonding definition | Atoms gain or lose electrons during reaction |
Covalent bonding definition | Atoms share electrons during reaction |